Massey Ferguson 0B.02.08 – Mid Mount Valve Module: Loader Mid Mount Electro Valve Solenoid Low Amp Draw
Issue description
The control module is detecting that the electrical current (amperage) flowing through the solenoid coil for the loader's mid-mount hydraulic valve is below the minimum expected threshold. This condition is almost always electrical and typically indicates high resistance in the circuit, a loose or corroded electrical connection, a damaged wiring harness, or a failing/burnt-out solenoid coil.
Applies to these machines
33 machines- 5710SL
- 5711SL
- 5712SL
- 5713SL
- T4
- 5608
- 5609
- 5610
- 5611
- 5612
- 5613
- 4707
- 4708
- 4709
- 4710
- 7614
- 7615
- 7616
- 7618
- 7619
- 7620
- 7622
- 7624
- 7626
- 7714
- 7715
- 7716
- 7718
- 7719
- 7720
- 7722
- 7724
- 7726
Check the cause
Inspect the wiring harness running from the tractor chassis to the mid-mount valve block for chafed wires, vibration damage, or stretched cables.
Disconnect the electrical plug at the mid-mount valve solenoid and check for water ingress, dust, or corroded pins. Ensure the pin tension is tight.
Using a digital multimeter, check the resistance (Ohms) of the solenoid coil itself. An open circuit (infinite resistance) or abnormally high resistance means the coil is dead.
Check the voltage reaching the connector under load to ensure the module is sending the correct trigger voltage.
Verify that the ground circuit for the mid-mount valve block has no high resistance, as poor grounds will cause low amperage readings.
Repair steps
Safety First
Lower the loader to the ground to relieve all hydraulic pressure. Turn off the tractor and disconnect the negative battery terminal to prevent short circuits.
Clean the Area
Thoroughly clean the mid-mount valve block area to prevent dirt from entering the hydraulic system when the valve is removed.
Disconnect Wiring
Unplug the electrical connector from the faulty mid-mount electro-valve solenoid.
Remove the Solenoid
Depending on the valve design, either remove the retaining nut at the end of the valve stem and slide the electromagnetic coil off, or use a wrench to unthread the entire solenoid cartridge valve from the block.
Install the New Part
Slide the new coil onto the stem (or thread the new cartridge into the block). If installing a cartridge, ensure the O-rings are lightly lubricated with clean hydraulic fluid. Do not overtighten.
Reassemble
Reconnect the electrical harness. Reconnect the battery.
Test
Start the tractor, allow hydraulic pressure to build, and operate the loader joystick to verify smooth engagement and ensure the 0B.02.08 code has cleared.
Parts you might need
(2)Loader Mid Mount Electro Valve Solenoid
3794721M4AGCO sometimes only sells the complete mid-mount spool valve assembly. Aftermarket suppliers or hydraulic specialists can often match the specific solenoid coil if you provide the numbers stamped directly on the faulty coil housing.
Loader Mid Mount Electro Valve Solenoid
3794721M5AGCO sometimes only sells the complete mid-mount spool valve assembly. Aftermarket suppliers or hydraulic specialists can often match the specific solenoid coil if you provide the numbers stamped directly on the faulty coil housing.
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